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ENGINE ON-VEHICLE INSPECTION

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  1. Click here

    INSPECT ENGINE IDLE SPEED

    Note:

    • Turn all the electrical systems and A/C off.

    • Inspect the engine idle speed with the cooling fan off.

    • When checking the idle speed, move the shift lever to neutral.

    Tip:

    • For more information about the GTS, refer to its operator's manual.

    • If the GTS is not available, use a tachometer as a substitute.


    1. Warm up and stop the engine.

    2. When using the GTS:


      1. Connect the GTS to the DLC3.

      2. Start the engine and idle it.

      3. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

    3. When not using the GTS:


      1. A01IOVKE07

        Connect a tachometer tester probe of a tachometer to terminal 9 (TAC) of the DLC3 with SST.

        09843-18040
        Table 1. Text in Illustration
        *a Front view of DLC3

      2. Start the engine and idle it.

    4. Inspect the engine idle speed.

      Standard idle speed (Reference)
      830 rpm

    5. Turn the ignition switch off.

    6. Disconnect the GTS or tachometer tester probe from the DLC3.

  2. Click here

    INSPECT MAXIMUM ENGINE SPEED


    1. Start the engine.

    2. Fully depress the accelerator pedal.

    3. Check the maximum engine speed.

      Maximum engine speed (Reference)
      3800 rpm
  3. Click here

    INSPECT COMPRESSION


    1. Warm up and stop the engine.

    2. Remove the glow plug assemblies (Click here).

    3. Disconnect the injector assembly connectors.

    4. Inspect the cylinder compression pressure.


      1. A01IP4FE01

        Insert SST (compression gauge attachment) into the glow plug hole.

        09992-52010
        Table 2. Text in Illustration
        *a SST (Compression Gauge Attachment)
      2. A01ITH1E01

        Connect SST (compression gauge) to SST (compression gauge attachment).

        09992-00026 09992-00211
        Table 3. Text in Illustration
        *a SST (Compression Gauge)

      3. While cranking the engine, measure the compression pressure.

        Standard compression pressure (Reference)
        1600 kPa (16.3 kgf/cm2, 232 psi) or higher
        Difference between each cylinder
        All cylinders almost same value
        Note:

        • Use a fully-charged battery so the engine speed can be increased to 280 rpm or more.

        • Inspect the other cylinders in the same way.

        • Measure the compression as quickly as possible.

      4. If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the glow plug holes, and then inspect it again.

        If adding oil increases the compression pressure, the piston rings and/or cylinder bore may be worn or damaged.

        If the pressure stays low, the valve may be stuck or seated improperly, or there may be leakage from the cylinder head gasket.

    5. Remove SST (compression gauge attachment and compression gauge).

    6. Connect the injector assembly connectors.

    7. Install the glow plug assemblies (Click here).